body {
    background: url(../asset/bg2.jpg) no-repeat center/100% 100%;
  }
  
  .container {
    width: 870px;
    height: 600px;
    background: #fff;
    display: flex;
    position: relative;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.2);
  
    color: #333;
  }
  .close {
    position: absolute;
    right: 10px;
    top: 10px;
    font-size: 30px;
    color: #aaa;
    background: #eee;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    border-radius: 50%;
    cursor: pointer;
    transition: 0.2s;
  }
  .close:hover {
    background: #ccc;
    color: #888;
  }
  .close .iconfont{
    font-size:40px;
  }
  .main {
    width: 600px;
    flex: 0 0 auto;
  }
  .aside {
    flex: 1 0 auto;
    padding-top: 80px;
    border-left: 1px solid #eee;
  }
  .aside-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    float: left;
    margin-left: 20px;
    margin-right: 10px;
  }
  .aside-name {
    font-weight: bold;
    margin-top: 18px;
    font-size: 20px;
    width: 128px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }
  .aside-account {
    color: #ccc;
    margin-top: 5px;
    width: 128px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }
  
  .main {
    display: flex;
    flex-direction: column;
  }
  .main-title {
    height: 50px;
    line-height: 50px;
    display: flex;
    align-items: center;
    font-size: 20px;
    background: #eceff1;
    flex: 0 0 auto;
    padding-left: 20px;
  }
  .main-title img {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    margin-right: 10px;
  }
  
  .chat-container {
    height: 430px;
    overflow: hidden scroll;
    padding: 20px;
    background: #f5f5f5;
    scroll-behavior: smooth;
  }
  .chat-container::-webkit-scrollbar {
    width: 5px;
    height: 13px;
  }
  .chat-container::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.5);
    background-clip: padding-box;
    border-radius: 5px;
  }
  
  .chat-item {
    padding-bottom: 25px;
    display: flex;
    position: relative;
    width: 100%;
    margin-bottom: 10px;
  }
  .chat-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 10px;
    flex: 0 0 auto;
  }
  .chat-content {
    font-size: 14px;
    border: 1px solid #d8d8d8;
    padding: 8px;
    background-color: #fff;
    border: 1px solid #d8d8d8;
    border-radius: 6px;
    position: relative;
    filter: drop-shadow(0 0 5px rgba(0, 0, 0, 0.1));
    line-height: 1.5;
    max-width: 450px;
  }
  .chat-content::after {
    content: '';
    background: inherit;
    position: absolute;
    width: 12px;
    height: 12px;
    border: inherit;
    left: -6px;
    top: 11px;
    transform: rotate(45deg);
    border-right-color: transparent;
    border-top-color: transparent;
  }
  .chat-date {
    position: absolute;
    color: #ccc;
    font-size: 12px;
    left: 50px;
    bottom: 5px;
  }
  .chat-item.me {
    flex-direction: row-reverse;
  }
  .chat-item.me .chat-avatar {
    margin-right: 0;
    margin-left: 10px;
  }
  .chat-item.me .chat-content {
    background: #98e855;
    border-color: #88cf4d;
  }
  .chat-item.me .chat-content::after {
    left: auto;
    right: -6px;
    border-left-color: transparent;
    border-bottom-color: transparent;
    border-right-color: inherit;
    border-top-color: inherit;
  }
  .chat-item.me .chat-date {
    left: auto;
    right: 50px;
  }
  .msg-container {
    display: flex;
    justify-content: flex-end;
    align-items: end;
    flex: 1 0 auto;
    padding: 20px;
    background: #fff;
    position: relative;
    border-top: 1px solid #eee;
  }
  .msg-container input {
    position: absolute;
    border: none;
    outline: none;
    resize: none;
    left: 20px;
    top: 20px;
    width: calc(100% - 40px);
    font-size: 16px;
    color: #333;
  }
  .msg-container button {
    background-color: #59b573;
    width: 68px;
    line-height: 32px;
    color: #fff;
    text-align: center;
    border-radius: 3px;
    cursor: pointer;
    border: none;
    outline: none;
    cursor: pointer;
    margin-left: 10px;
  }
  .msg-container button:hover {
    background-color: #66c982;
  }
  .msg-container button:active {
    background-color: #458e5a;
  }